public class TestState {

    public static void main(String[] args) throws InterruptedException {
        Thread thread=new Thread(()->{
            for (int i = 0; i < 5; i++) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            System.out.println("----------------");
        });
        // 观测创建状态
        Thread.State state=thread.getState();
        System.out.println(state);
        // 启动后状态
        thread.start();
        state=thread.getState();
        System.out.println(state);

        while(state!=Thread.State.TERMINATED){
            Thread.sleep(100);
            state=thread.getState();
            System.out.println(state);
        }
        //thread.start();  error
    }
}
